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| author | Reid Spencer <rspencer@reidspencer.com> | 2006-11-08 06:47:33 +0000 |
|---|---|---|
| committer | Reid Spencer <rspencer@reidspencer.com> | 2006-11-08 06:47:33 +0000 |
| commit | 3822ff5c71478c7c90a50ca57045fb676fcb5005 (patch) | |
| tree | 44d109d0052024ecdbcfceb248446b56a7bfce0f /lib/Transforms/Utils/Local.cpp | |
| parent | 73fb07566b24d43bb116c2ade0297d90ec72490d (diff) | |
| download | llvm-3822ff5c71478c7c90a50ca57045fb676fcb5005.tar.gz llvm-3822ff5c71478c7c90a50ca57045fb676fcb5005.tar.bz2 llvm-3822ff5c71478c7c90a50ca57045fb676fcb5005.tar.xz | |
For PR950:
This patch converts the old SHR instruction into two instructions,
AShr (Arithmetic) and LShr (Logical). The Shr instructions now are not
dependent on the sign of their operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31542 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Utils/Local.cpp')
| -rw-r--r-- | lib/Transforms/Utils/Local.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Transforms/Utils/Local.cpp b/lib/Transforms/Utils/Local.cpp index 28864fd613..1e032a3bd0 100644 --- a/lib/Transforms/Utils/Local.cpp +++ b/lib/Transforms/Utils/Local.cpp @@ -120,7 +120,8 @@ Constant *llvm::ConstantFoldInstOperands(unsigned Opc, const Type *DestTy, } return 0; case Instruction::Shl: - case Instruction::Shr: + case Instruction::LShr: + case Instruction::AShr: return ConstantExpr::get(Opc, Ops[0], Ops[1]); case Instruction::Cast: return ConstantExpr::getCast(Ops[0], DestTy); |